{"product_id":"unicel-6ch-26","title":"Unicel 6CH-26 Replacement Filter for American Spas PTL25W-SV-P4 | 25 Sq. Ft.","description":"\u003cdiv class=\"pz-pdp\"\u003e\n\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThe Unicel 6CH-26 is a pleated polyester spa cartridge filter element providing 25.0 sq ft of filtration area in a compact, threaded-stem configuration designed for top-loading skim-filter housings common to portable spa applications. Media construction utilizes Reemay-grade nonwoven polyester at a nominal 20-micron filtration efficiency, bonded to closed-bottom and open-top ABS injection-molded end caps. The top end cap features an integrated SAE thread-style stem (designated SV-P4 by OEM) for direct manifold engagement, eliminating the need for separate gasket retention hardware. Dimensional specifications: 5.0-inch OD, threaded male stem at top, closed handle-style bottom, 13.4375-inch overall length including stem. Coreless construction is appropriate for the low-pressure operating range (5–15 PSI typical) of integrated spa circulation systems with maximum continuous service temperature rated to 104°F.\u003c\/p\u003e\n\u003cp\u003eService interval recommendation: rinse with fresh water every 2–4 weeks under typical residential spa duty cycles; chemical soak with dilute TSP or enzyme cleaner every 4–6 weeks to displace body oils, lotions, and surfactant residue that resists water-only rinsing. Replace the element at ≤ 12-month intervals for standard residential use, or at ΔP ≥ 5 PSI above clean operating baseline, whichever occurs first. Chemical compatibility: polyester media and ABS end caps tolerate continuous operation at ≤ 10 ppm free available chlorine or ≤ 30 ppm total bromine; muriatic acid soak compatible at 1:20 dilution for calcium scale removal (20-minute maximum exposure, rinse thoroughly before reinstallation). Enzyme cleaners compatible without restriction. Verify ozone compatibility with system specification before deployment in ozone-primary sanitization applications. Standard Unicel 90-day manufacturer's defect warranty applies through authorized distribution.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cp\u003eYour order includes the selected quantity of replacement spa filter cartridges. Each unit is individually inspected for quality before shipping.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Unicel","offers":[{"title":"Default Title","offer_id":42315918082094,"sku":"UNF6CH26","price":37.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0016\/3453\/3422\/files\/UNF6CH26_71cf64b0-7085-4d30-a837-39c261c254db.jpg?v=1777663776","url":"https:\/\/poolzilla.com\/products\/unicel-6ch-26","provider":"Poolzilla","version":"1.0","type":"link"}